xlib: Unlike the visual when destroying it

Otherwise we leave dangling pointers in the visual list, leading to
memory corruption when using low bitdepth servers.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 7 insertions, 1 deletions

diff --git a/src/cairo-list-inline.h b/src/cairo-list-inline.h
index d00f40e98..0955178d2 100644
--- a/src/cairo-list-inline.h
+++ b/src/cairo-list-inline.h
@@ -145,9 +145,15 @@ __cairo_list_del (cairo_list_t *prev, cairo_list_t *next)
 }
 
 static inline void
-cairo_list_del (cairo_list_t *entry)
+_cairo_list_del (cairo_list_t *entry)
 {
     __cairo_list_del (entry->prev, entry->next);
+}
+
+static inline void
+cairo_list_del (cairo_list_t *entry)
+{
+    _cairo_list_del (entry);
     cairo_list_init (entry);
 }